linux-cve-announce - CVE-2022-49683: iio: adc: adi-axi-adc: Fix refcount leak in adi_axi_adc_attach

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Message-ID: <2025022626-CVE-2022-49683-b7e3@gregkh>
Date: Wed, 26 Feb 2025 03:24:06 +0100
From: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To: linux-cve-announce@...r.kernel.org
Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Subject: CVE-2022-49683: iio: adc: adi-axi-adc: Fix refcount leak in adi_axi_adc_attach_client

Description
===========

In the Linux kernel, the following vulnerability has been resolved:

iio: adc: adi-axi-adc: Fix refcount leak in adi_axi_adc_attach_client

of_parse_phandle() returns a node pointer with refcount
incremented, we should use of_node_put() on it when not need anymore.
Add missing of_node_put() to avoid refcount leak.

The Linux kernel CVE team has assigned CVE-2022-49683 to this issue.


Affected and fixed versions
===========================

	Issue introduced in 5.8 with commit ef04070692a21633ec6a60f80c19b6af44b3cf47 and fixed in 5.10.127 with commit 501652a2ad5450b4908e1f204ce75b2414c305b7
	Issue introduced in 5.8 with commit ef04070692a21633ec6a60f80c19b6af44b3cf47 and fixed in 5.15.51 with commit ab7bf025cee89db73c649216ddd2bc589c3d3862
	Issue introduced in 5.8 with commit ef04070692a21633ec6a60f80c19b6af44b3cf47 and fixed in 5.18.8 with commit 5eaa84e1605035a90a64d25b6cba79e89d188175
	Issue introduced in 5.8 with commit ef04070692a21633ec6a60f80c19b6af44b3cf47 and fixed in 5.19 with commit ada7b0c0dedafd7d059115adf49e48acba3153a8

Please see https://www.kernel.org for a full list of currently supported
kernel versions by the kernel community.

Unaffected versions might change over time as fixes are backported to
older supported kernel versions.  The official CVE entry at
	https://cve.org/CVERecord/?id=CVE-2022-49683
will be updated if fixes are backported, please check that for the most
up to date information about this issue.


Affected files
==============

The file(s) affected by this issue are:
	drivers/iio/adc/adi-axi-adc.c


Mitigation
==========

The Linux kernel CVE team recommends that you update to the latest
stable kernel version for this, and many other bugfixes.  Individual
changes are never tested alone, but rather are part of a larger kernel
release.  Cherry-picking individual commits is not recommended or
supported by the Linux kernel community at all.  If however, updating to
the latest release is impossible, the individual changes to resolve this
issue can be found at these commits:
	https://git.kernel.org/stable/c/501652a2ad5450b4908e1f204ce75b2414c305b7
	https://git.kernel.org/stable/c/ab7bf025cee89db73c649216ddd2bc589c3d3862
	https://git.kernel.org/stable/c/5eaa84e1605035a90a64d25b6cba79e89d188175
	https://git.kernel.org/stable/c/ada7b0c0dedafd7d059115adf49e48acba3153a8